Electric skateboard



FIG. 1 is a top view showing an electric skateboard;

FIG. 2 is a bottom view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a right-side view thereof;

FIG. 6 is a left-side view thereof; and,

FIG. 7 is a bottom, front and right perspective view thereof.

The broken lines in FIGS. 1 through 7 illustrate portions of the electric skateboard that are not part of the claimed design. 

CLAIM The ornamental design for an electric skateboard, as shown and described. 